Oil

With more than 20 million copies sold in 41 languages and more than 88 countries worldwide, DK Eyewitness has been the most trusted series in reference publishing for more then three decades. Visually engaging, informative, and lively, the more than 100 titles in the Eyewitness series focus on subjects that complement students' personal interests and areas of study to make learning simple and fun.

• The most trusted nonfiction series for teachers, librarians, and parents
• Perfect for homework help
• Combination of pictures and text make the series perfect for reluctant readers and ESL students